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Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

/*	$OpenBSD: lsi64854var.h,v 1.6 2007/02/28 18:48:35 miod Exp $	*/
/*	$NetBSD: lsi64854var.h,v 1.4 2001/03/29 02:58:39 petrov Exp $ */

/*-
 * Copyright (c) 1998 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Paul Kranenburg.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

struct lsi64854_softc {
	struct device		sc_dev;		/* base device */
	bus_space_tag_t		sc_bustag;	/* bus tags */
	bus_dma_tag_t		sc_dmatag;

	bus_space_handle_t	sc_regs;	/* the registers */
	u_int			sc_rev;		/* revision */
	int			sc_burst;	/* max supported burst size */

	int			sc_channel;
#define L64854_CHANNEL_SCSI	1
#define L64854_CHANNEL_ENET	2
#define L64854_CHANNEL_PP	3
	void			*sc_client;

	int			sc_active;	/* DMA active ? */
	bus_dmamap_t		sc_dmamap;	/* DMA map for bus_dma_* */
	caddr_t			sc_dvmaaddr;	/* DVMA cookie */
	size_t			sc_dmasize;
	caddr_t			*sc_dmaaddr;
	size_t			*sc_dmalen;

	void	(*reset)(struct lsi64854_softc *);/* reset routine */
	int	(*setup)(struct lsi64854_softc *, caddr_t *, size_t *,
			      int, size_t *);	/* dma setup */
	int	(*intr)(void *);		/* interrupt handler */

	int	(*sc_intrchain)(void *);	/* next handler in intr chain */
	void	*sc_intrchainarg;		/* arg for next intr handler */

	u_int 			sc_dmactl;
};

#define L64854_GCSR(sc)	\
	(bus_space_read_4((sc)->sc_bustag, (sc)->sc_regs, L64854_REG_CSR))

#define L64854_SCSR(sc, csr)	\
	bus_space_write_4((sc)->sc_bustag, (sc)->sc_regs, L64854_REG_CSR, csr)


/*
 * DMA engine interface functions.
 */
#define DMA_RESET(sc)			(((sc)->reset)(sc))
#define DMA_INTR(sc)			(((sc)->intr)(sc))
#define DMA_SETUP(sc, a, l, d, s)	(((sc)->setup)(sc, a, l, d, s))

#define DMA_ISACTIVE(sc)		((sc)->sc_active)

#define DMA_ENINTR(sc) do {			\
	u_int32_t csr = L64854_GCSR(sc);	\
	csr |= L64854_INT_EN;			\
	L64854_SCSR(sc, csr);			\
} while (0)

#define DMA_ISINTR(sc)	(L64854_GCSR(sc) & (D_INT_PEND|D_ERR_PEND))

#define DMA_GO(sc) do {				\
	u_int32_t csr = L64854_GCSR(sc);	\
	csr |= D_EN_DMA;			\
	L64854_SCSR(sc, csr);			\
	sc->sc_active = 1;			\
} while (0)


int	lsi64854_attach(struct lsi64854_softc *);
int	lsi64854_enet_intr(void *);